[PSUBS-MAILIST] SeaQuestor progress.

[Rick Patton via Personal_Submersibles]

Thanks David, can't wait to see the video. I came up with an idea that will
work using an electric planer running on a track that is shaped in the
profile you want your MBT to be but it would be labor intensive and would
have to build a tent to do it in due to the mess factor!
Rick

On Sun, Jan 6, 2019 at 2:17 PM David Colombo via Personal_Submersibles <
personal_submersibles at psubs.org> wrote:

> Hi Rick, the flashing is cut to the radius of you hull. (It might take a
> couple of pieces), depending on the lenght of your arc. Two sets will need
> yo be made. Then either barge cement the arc to each end of your foam
> block, or hold in place with screws. Then draw the hot wire against the
> form. On large pieces, this process best works with two people, or a large
> bow wire cutter where you can feel the wire agsinst the form as you pull
> the wire through the foam.  I will be taking video as i build and will
> share.
> David
>
> On Sun, Jan 6, 2019, 10:22 AM Rick Patton via Personal_Submersibles <
> personal_submersibles at psubs.org> wrote:
>
>> Hi David
>> Could you expand a little on your first sentence? Don't understand. Are
>> you saying to bend (form) the aluminum flashing to the shape I want the
>> styrofoam and then draw a hot wire along it to set the cut in the
>> styrofoam? The flashing must have to be rotated after each pass with the
>> hot wire from 9 o'clock over the top to 3 o'clock to get the proper shape
>> and radius for the mold so how do you rotate the flashing plus the flashing
>> has to pivot on a predetermined axis dependent of what shape you want so
>> you would have to somehow remove the styrofoam without the hot wire to
>> attach the formed flashing to the pivot points on both ends of the
>> styrofoam block?
>> Rick
>>
>>
>> On Sat, Jan 5, 2019 at 8:39 PM David Colombo via Personal_Submersibles <
>> personal_submersibles at psubs.org> wrote:
>>
>>> Hi Rick, use aluminum flashing that you buy from the hardware store as
>>> the form cut to shape on both ends of the foam block. Draw your hot wire
>>> across the form, and you can get the exact shape. Play with voltage on your
>>> hot wire to determine the speed and smoothness of your cut.
>>> I will be doing the same thing for ballast tanks to fit around my
>>> external ribs under the exoskeleton.
>>>
>>> David
>>>
>>> On Sat, Jan 5, 2019, 10:05 PM Rick Patton via Personal_Submersibles <
>>> personal_submersibles at psubs.org> wrote:
>>>
>>>> David
>>>>
>>>> Have you come up with a method yet for creating your hot wire rig? I
>>>> have a chunk of Styrofoam that I want to shape for my MBT molds and the
>>>> first layer has to be the OD of my hull as close as I can get and my
>>>> concern was that if I use a hot wire/knife, the Styrofoam would shrink away
>>>> from both sides of the source.
>>>> Rick
>>>>
>>>> On Sat, Jan 5, 2019 at 2:32 PM David Colombo via Personal_Submersibles <
>>>> personal_submersibles at psubs.org> wrote:
>>>>
>>>>> Hi guys, I aquired 380cf (4) 4ft x 3ft x 8ft blocks of foam for the
>>>>> exoskeleton shaping process. First I need to build the platform for the
>>>>> (16) station ribs to be attached at 12" o.c. The station ribs have been cnc
>>>>> cut from 3/4" plywood and are hanging on the wall ready to be assembled.
>>>>> Then build a hot wire cutting rig to slice the foam into 11.25" wide
>>>>> blocks. Then the shaping process can begin.
>>>>> David
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>>>>>
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